Gulf Wax is the common brand of paraffin wax. It is used for home canning (fruits and vegetables), crafts, and many other uses. It is inexpensive. You can find it at the grocery store, Walmart, and many other places. It comes as a solid block of paraffin wax. Paraffin wax is like a plain white candle with no wick.
For those who use it on their table saw, how you you apply it? Do you rub the block all over, then buff it off? Do you soften or melt it first?
Do you know what makes your paraffin wax different than the paraffin wax in Boeshield T-9? Can you explain why your paraffin is slick, but my Boeshield T-9 is sticky, despite much buffing effort?
First off, it doesn't feel slick to you or your hand, but it is slick to the workpiece. So that makes it counter intuitive, and the reason why a lot of people don't realize that it works better than paste wax.
Yes, you just drag the block across the surface of the cast iron and leave behind a white streak of wax. It's not there to look pretty; it's there to lower the friction coefficient between the wood and iron.
As for the Boeshield T-9, I'm pretty sure I have some down in the shop from way back when that first hit the market (they sent out free samples back in the 90's), but the block of wax was just easier to handle at the time.
However, you gave me an idea to ponder. No, I'm not going to switch, myself, but I bet the wax-based end-sealer that Rockler sells would give you a wipe-on paraffin wax finish. Someone could try it out. I do have some, and when it dries, it leaves a very thick wax coating behind.